[Ian]

Ariel:

A few synonyms for "pucker"

abbreviate, agitation, all-overs, angst, anxiety, anxiety hysteria,
anxiety neurosis, anxious bench, anxious concern, anxious seat,
anxiousness, apprehension, apprehensiveness, befuddlement,
bewilderment, bother, botheration, cankerworm of care, care, chaos,
circumscribe, cloud, coarct, cocker, cockle, compact, compress,
concentrate, concern, concernment, condense, confusion,
consolidate, constrict, constringe, contract, corrugate,
corrugation, cramp, crankle, crease, crimp, crimple, crinkle,
crinkling, crumple, curtail, daze, decrease, discombobulation,
discomfiture, discomposure, disconcertion, disorder,
disorganization, disorientation, disquiet, disquietude, distress,
disturbance, dither, draw, draw in, draw together, dread,
embarrassment, fear, flap, flummox, flurry, fluster, flusteration,
flustration, flutter, fog, fold, foofaraw, foreboding,
forebodingness, frenzy, fret, fuddle, fuddlement, furrow, fuss,
gather, haze, inquietude, jumble, knit, knot, lather, malaise,
maze, mess, misgiving, mist, muddle, muddlement, narrow,
nervous strain, nervous tension, nervousness, overanxiety,
perplexity, perturbation, pins and needles, pleat, pother,
pucker up, purse, reduce, ridge, rimple, ripple, rivel, ruche,
ruck, ruckle, ruffle, rumple, screw up, shirr, shirring, shorten,
shuffle, solicitude, solidify, squeeze, stew, strain, strangle,
strangulate, suspense, sweat, swivet, tension, tighten, tizzy,
trouble, tuck, twitter, twitteration, uneasiness, unquietness,
unsettlement, upset, vexation, wimple, wrinkle, wrinkling, zeal